Practice Questions

TLS Online TPP Program

#Question id: 1533

Why might using retroviral vectors for gene therapy increase the patient's risk of developing cancer?

#Unit 4. Cell Communication and Cell Signaling

Retroviral vectors may introduce proteins from the virus.
Retroviral vectors do not express the genes that were introduced into a patient's cells.
Retroviral vectors do not integrate their recombinant DNA into the patient's genome.
Retroviral vectors integrate recombinant DNA into the genome in ways that may misregulate the expression of genes at or near the site of integration.

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TLS Online TPP Program

#Question id: 5323

#Unit 8. Inheritance Biology

An X-linked recessive gene produces red-green color blindness in humans. A woman with normal color vision whose father was color-blind marries a color-blind man. What is the probability that their son will be color-blind?

TLS Online TPP Program

#Question id: 4825

#Unit 8. Inheritance Biology

How many genetically different gametes can be made by an individual of genotype AaBbCcDd if gene A, B are completely link and other are unlink?

TLS Online TPP Program

#Question id: 19357

#Unit 13. Methods in Biology

BAC vectors are based on _________ plasmid.

TLS Online TPP Program

#Question id: 9269

#Unit 6. System Physiology – Plant

The distribution of electrons in the excited molecule is somewhat different from the distribution in the groundstate molecule, Absorption of blue light excites the chlorophyll to a higher energy state than absorption of red light because